Improvement in sash-lock



weer aaww @www WILLIAM LEE MCKIBBN, OF BUCK VALLEY, PENNSYLVANIA.

' `Latas Patent No. 86,773, dazed Fama/ry 9, 1869.

:Innover/rem* 1N sAsH-Locn The Schedule referred to in these Letters Patent and making part of the name.

To all whom t may concern:

Be it known that I, WIIIJLLAM'LEE McKlBBIN, of

`Buck Valley, in the county of Fulton, and State of Pennsylvania, have invented a new and useful Improvement in Window-Sash Locks and Supporters; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had tothe accompanying drawings, forming ,part of this specification, in which- Figure 1 is a vertical sectional view of a window to which my improvement has been attached, parts being broken away to show the construction.

Figure 2 is a detail sectional view of the same, taken through the line x, iig.v l. y

A Similar letters of reference indicate like parts.

My invention has for its object to furnish an improved lock and supporter for wiudoW-sashes, which shall be so constructed and arranged as to hold the sash securely locked when lowered, and `to securely support it in any posit-ion to which it may be raised. V

It consists inv the construction and combination of the various parts, as hereinafter more fully described.

A is a plate, having an angular flange, B, formed upon or attached to its under side.

*t The plate A is attached to the windowcasing C, with the ange B projecting into a recess, o', formed in the said casing G, as shown in fig. 1.

D is a bL ll, which may be made of glass, rubber, or any other desired and suitable material, and which is placed in the recess c in thel casing G, between the angular plate B and the side of the sash E.

In .the forward side of the sash E, in such a position as to he directly opposite the recess c in the casing G, when the said sash is fully lowered, is formed a curved recess, e', of such a depth that, when its deepest part may be directly opposite the angle of the flange B, the ball D may pass by said angle into the lower part of the recess c' in the casing C.

F is a block, or small plate, placed in the recess e', and which is of such a size that it can move up and down through said recess, past the angle of the ange B of the plate A.

The `block or plate F is formed with a stem upon its upper or outer edge, which passes out through a the sash may be raised freely; but when the said sash is released, the ball D is clamped between the inclined upper part of the ange, or plate,'B, and the side of the .sash E, holding said sash securely in place, and the Y said sash E can only be lowered by raising the ball D into the upper part of the recess c-by means of the plate or block F.

When the sash has been fully lowered, the ball D,

drops past the angle of the flange B, into the lower part of the recess c', so that, when it is attempted to raise the sash, the ball Dwill be clamped between the inclined lower part of the flange, or plate, B, and the side of the sash E, securely locking the said sash, so that it can only be raised by first raising the ball D into the upper part of the recess c', by means of the plate or block F.

Having thus described my invention, I claim as new, and desire to secure. by Letters Patent- The arrangement of the slotted plate A, angular ange, or plate, B, ball D, and block or plate F, with the recess e in the sash, all operating as herein described and for the purpose specied.

WM. LEE MCKIBBIN.

Witnesses: l

RALPH EDDoWEs, Jnssn WooLLnNs. 

